Improvement in pumps



UNITED STATES REUBEN A. MCCAULEY, OF BALTIMORE, MARYLAND.

IMPROVEMENT IN PUMPS.

`Spccilcation forming part of Letters PatentNo. 5 I,736, dated December 26, 1865.

To all whom it may conce/rn:

Be it known that I, REUBEN A. MCCAULEY, ofthe city and county ot' Baltimore, and State ot' Maryland, have invented a new and Improved Force-Pump; and I do hereby declare that the following' is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in so constructing my piston and valve above it, as also that part of the rod or piston wh-ich passes through the stufng-box ofthe chamber or cylinder or top of pump, that the power is equalized and the labor of working is lessened, while a regular constant dow of liuid is obtained.

In the drawings, Figure l is a vertical section through the pump.; Fig. 2, an elevation of the handle, and Fig. 3 a top view of valve on the piston.

A represents the ordinary chamber or cylinder in which the piston and valves work.

B is the piston; U, its rod, connecting with rock-handle I). The top F or stuffing-box F of cylinder through which piston I3 works is secured as usual.

G is the side pipe through which the water is forced.

H is the lower valve-box, secured to bottom of cylinder by bolts and nuts h.

I is the lower valve, made of metal, whose up-and-down play is regulated by a nut, fi, or other equivalent device on the lower end of central stem, which slides in a hollow central projection, i, of box H. This box has holes lc in its bottom to admit water. The circular head of valve I tits nicely in its hed or seat in top ofboX H, and on the upstroke of piston B rises in the cylinder A and lets the water into it from below and around its outer edge, below the head b of the piston.

J is an open or ring valve, which slides on the contracted part b of piston and can rotate around it. On the upstroke it rests on head b of piston, cutting off the water above it while valve I is letting in the water below. On the down-stroke J rises, as represented in red lines, permitting the water to pass through openingsj in it. Thus it will be seen that on either stroke, or on both, water or tluid is being forced upward through pipe G, the ow not being intermittent, as is usually or always the case; and this arrangement at the same time equalizes the power of working the pump,

making it uniform, or as nearly so as possible, on the up and down stroke.

My piston I make of metal, as also its head b" and the open ring-valve J,'whose width serves to center that end ot piston. I use no packing, although some may be put around valve J, if desired; but with nice titting it is not at all necessary.. The upper end of piston passing through stufting-boxis centered and the little friction there is all that is to be overcome.

I have found by experiment the best size for the piston working inside ot' the cylinder to be such as to occupy one-half the cubic con tents of such cylinder, displacing about onehalt'thc water. Under varying circumstances, however, it may be made a little larger or smaller; but when'the pump is submerged the size mentioned is found to be best, as it secures a uniform constant flow andv equal power on both strokes.

In using my pump as a suction and force pump (not submerged) I think it would be found advisable to increase slightly the size ofthe piston B to equalize the power on each stroke. By experiment I found in a three-inch cylinderpnmp it was capable ot' raising nine hundred gallons of water per hour with but little exertion, forcing the same through fty feet of hose and throwing the stream some lfty feet high. v

My pump has no air-chamber, and the piston B may be hollow.

The valve and piston used are adapted to double-acting pumps by the application ot' another valve and piston-head, similar to those described, by connecting them together. This obviates the necessity of shoulders on the piston-rod to check the valves on the lift. This valve and piston is adapted to all kinds of force and lifting pumps.

What I claim as new and as of my invention, and desire to secure by Letters Patent of the United States, is-

1. The piston-head b" and the sliding valve J,- as arranged in relation to the' cylinder and piston-rod, all substantially as described, for the purpose set forth.

2. Enlarging the piston-rod above the play of the valve and throughout the extent ot' the cylinder when used in connection with head b and valve J.

Witnesses: REUBEN A. MGGAULEY.

S. S. FAHNEsTocK, JOHN S. HOLLINGSHEAD. 

